<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 收获地址区域 -->
    <my-address></my-address>
    <!-- 标题区域 -->
    <view class="cart-title-box">
      <uni-icons type="shop" size="18"></uni-icons>
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i" >
        <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" @radio-change="radioChangeHandler" :show-num="true" @num-change="numChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 结算区域 -->
    <my-settle></my-settle>
  </view>
  
  <!-- 没有购物车商品展示区 -->
  <view class="empty-cart" v-else>
    <image src="/static/empty_img.jfif" class="empty-img"></image>
    <text class="empty-text">空空如也~</text>
    <button class="empty-btn" @click="GoToGoods">马上去逛逛</button>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState, mapMutations} from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    data() {
      return {
        options: [{
          text: '取消',
          style: {
            backgroundColor: '#c00000'
          }
        }]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        this.updateGoodsState(e)
      },
      // 商品的数量状态发生了变化
      numChangeHandler(e){
        this.updateGoodsCount(e)
      },
      // 删除点击的方法
      swipeActionClickHandler(goods){
        this.removeGoodsById(goods.goods_id)
      },
      GoToGoods(){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list'
        })
      }
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
.cart-title-box {
  padding-left: 5px;
  height: 40px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #efefef;
  .cart-title-text{ 
    margin-left: 10px;
  }
}
// 空空如也样式区
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img {
    height: 90px;
    width: 90px;
  }
  .empty-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
  .empty-btn {
    height: 50px;
    width: 150px;
    color: white;
    margin-top: 30px;
    background-color: #c00000;
    border-radius: 32px;
  }
}
</style>
